| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 781.09 | USD | 20250930 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 780.02 | USD | 20250926 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 781.06 | USD | 20250925 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 781.06 | USD | 20250924 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 780.52 | USD | 20250922 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 780.28 | USD | 20250919 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 781.37 | USD | 20250908 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 780.71 | USD | 20250902 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 781.0 | USD | 20250828 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 780.5 | USD | 20250827 |